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Admin
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I think it must be f/D=0,6
Did you get the antenna from this forum...????
What is the diameter of the parabola...???
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,,,yes, it seems so, the antenna is narrow band...!!!
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3 hours ago, Pupe said:Am I guessing correctly, is there circular polarization here?
,,,yes...!!1
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,,,a first simulation attempt, optimization follows...
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Single band IEEE 802.11 a/n standard
High gain patch antenna
Frequency (MHz) : 5150-5825
Peak Gain (dBi) : 10.0
VSWR : 2.0 : 1
Dimension (mm) : 76 x 72 x 3.8
Connector : IPEX MHF I
Cable Length (mm) : 50 (customized)
It seems to work well on the 5.6 GHz frequency.
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A new attempt at impedance equalization,with a single port...
,,,and some other dimensions...
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Clanon,could you give some dimensions?
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,,, another version of Bester Antenna by Alexander Bars....
and positioning this antenna in the focus of an offset parabolic dish
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Another combination...
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Loop yagis are basically a hybrid design of a tuned loop in a yagi type array. The best material to use for the construction of a loop yagi is brass, or copper. Brass is the better choice since it is easier to solder and corrodes less than copper.
An example of a loopyagi in use. The antenna is on it's side so that the polarisation is vertical.
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,,and yet where are the dimensions...?
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,,,and this loop is for 145 MHz...
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,,,and they are really interesting....
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This size of wire is not suitable for this frequency.
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I think it would be best to build the loops from 3x25 mm flat strip."
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,,,like this../
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Henry, you really want this antenna...???
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,,,maybe something like this 144 Mhz Magnetic Loop Antenna...
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,,,hi buddy...!!!
The yagi-loop antenna is too big for this frequency...!!!
(the circumference of the vibrator is approximately equal to the wavelength)
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S11 or VSWR indicates the amount of energy reflected in the RF circuit and transmitted to the antenna. The smaller the value, the better it is. Generally, S11≤-6dB or VSWR≤3 would indicate acceptable performance.
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And what...isn't it good...????
in Antennas for 2.4 GHz band
Posted
,,,but f/D=0.,448 ,it must to be 0,6...!!!